SUMMARY

• Around 8 years of IT experience in Linux/Unix AIX Systems Administration and Server Virtualization, worked closely with Software development, application and database teams to meet business and technical demands.
• Experience in installation, configuration, backup, recovery, maintenance, and support of Red Hat Enterprise Linux, Oracle Enterprise Linux, SUSE, Fedora, CentOS and AIX on Virtual (VMware) and Physical (HP, Dell and IBM) environments.
• Extensive experience with Linux, Unix, and WinCE development,Linux Kernel module, Device Driver development, Multiple Task/Thread Development,IPC communications, IP/TCP/UDP Socket programs;POSIXAPI,Shell Scripts,Bash,Peril,Python, File System and Low Level System I/O.
• Experience with VMware vSphere ESXi 4.1/5.0/5.1.
• Experience in installing, upgrading and configuring RedHat Linux 3.x, 4.x, 5.x, and 6.x using Kickstart Servers and Interactive Installation.
• Worked with Database administrators to tune kernel for Oracle installations.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Experience in installing, configuring and implementing the RAID technologies using various tools like VxVM and Solaris Volume Manager.
• Experience in server monitoring, capacity planning, application monitoring with the help of Nagios, Cacti, Zabbix.
• Experience using cloud providers and API’s for Amazon (AWS) with CloudSigma (EU).
• Worked on Data - Center operation and migration across Unix and Linux platforms.
• Experience with creating and managing user accounts, security, rights, disk space and process monitoring in Solaris and Redhat Linux.
• Experienced in implementing and maintaining an Apache/MySQL/PHP (LAMP) web service environment.
• Solid working knowledge of VMware, NFS, NIS, NAS/SAN’s,Puppet/Chef, Jenkins, Kickstart and APT/Yum.
• Good knowledge in IBMAIXhardware components (RS/6000, pSeries), SAN, HBAs, Fiber channel, VERITAS volume manager, trouble-shooting and maintenance of PC's
• Installation and upgradation of packages and patches, version control, service pack and reviewing connectivity issues regarding security problem.
• Experience in configuration ofNIS, NIS+, DNS, DHCP, NFS, LDAP, SAMBA, SQUID, postfix, sendmail, FTP, remote access, security management and security trouble shooting skills.
• Experience on Webservers such as iPlanet Webserver 6.0 /Sun one web server 6.3, 6.5, Tomcat 3.x, 4.x, 5.x, 6.x, and 7.x & Apache Server 1.x, 2.x and integrating them with Weblogic 10.x servers.
• Experience and knowledge on z/VM installation, maintenance, troubleshooting, and strong problem analysis techniques as well as z/VM customization of all OS components.
• Experienced with Redhat Satellite Server with custom repositories to provide a stable management solution for the Linux environment.
• Worked on Puppet for automation of configuration and file/script management in the entire infrastructure.
• Worked on implementation of Puppet modules to automate configuration of a broad range of services.
• Participated, documented, managed ITIL controls and supported Linux environment.
• Hands-on experience with VMware, installation, configuration of ESX 5.0 and ESXI 5.1.
• Experienced in administering VMware Infrastructure Client 3.5 and vSphere 5.0, Xen, KVM.
• Experienced in Installation of Oracle and MySQL, all facets ofHP-UX/Linux Systems Administration in a large SAP/Oracle.
• Experienced in writing shell scripts to automate the administrative tasks and management using Cron jobs.
• Experienced in configuration and installation of Public-Key Infrastructure (PKI) software and hardware to end-user workstations across the unclassified systems.
• Expertise in scripting for automation, and monitoring using Shell, PHP, Python & Perl scripts.
• Experienced in installing firmware upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Good understanding of OSI Model and TCP/IP protocol suite (IP, ARP, TCP, UDP, SMTP, FTP, and TFTP).
• Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 and Clariion CX3 series arrays as well as HP EVA 8400.
• Creating Linux Virtual Machines using VMware Virtual Center and AIX LPARs on P550 and P570.
• Independent problem solving and a good team player with strong interpersonal and communication skills. Ability to work independently as well as a team member.
• Experience with 24x7 availability to support the production computing environments, providing on-call and weekend support.

TECHNICAL SKILLS

Operating Systems: RHEL 5.x/6.x, SUSE 10.x/11.x, Solaris 8/9/10, Fedora 22/23, IBM-AIX 5.X, zVM, IBM power7/6/5 p520s, p550s, p570s, p595s, p760s, p770s, Windows 98/2000/NT.

Hardware: HP Proliant, Blade servers, Sun Sparc Enterprise M3000/ M4000/ M5000/ T2000/ T4-2, Sun Servers E450/ E3500/ E4500/ E5000/ E6500, Sun Fire V210/ V280/ V490/ V890, Sun Blade T6300, HP Proliant BL 460c Gen6,8/DL 360p Gen8/DL 380 Gen 9, SUN Desktops (SPARC 10, 5), DMX3 and DMX4 Storage ArraysSoftware Veritas Storage Foundation High Availability 5.1/6.2, Veritas Volume Manager 3.5/4/5, Veritas File System,Veritas Cluster Server, Veritas Netbackup 6.0, SolarWinds & Groundworks monitoring, MS-Office/MS-Project, Puppet, Chef, Cacti, Nagios

Web/ Application Server: Tomcat, Splunk, Apache DB2, Oracle Database

Network Protocols: DHCP, DIG, DNS, SNMP, SMTP, Ethernet, IOS, netstart, NFS, NIS, RIP, OSPF, BGP, TCP/IP, and tcpdump, FTP, TFTP.

Cluster Environment: VERITAS Cluster Servers 4.1, 5.1, 6.2 and Sun Cluster Servers 2.2, 3.1, 3.2

Programming Languages: C, C++, SQL, HTML, PHP, Bash, Perl and Shell Programming, JSP, Python

PROFESSIONAL EXPERIENCE

Confidential, Hershey, PA

Senior Linux/Unix Administrator

Responsibilities:

• On-call 24/7 support in rotation for Level-4 escalation incidents from CRM & ServiceNow. Also worked on regular severity 2/3 incidents and tasks as assigned through JIRA.
• Upgraded Veritas Storage Foundation High Availability from 5.1 (approaching EOSL) to 6.2 in the main production datacenter to fix the Veritas DMP bug.
• This bug had caused an extended system outage and failure to identify the resources even when online.
• Implemented disk based I/O fencing for Veritas Clusters at the data center to prevent split brain issues which caused issues after power outage.
• Responsible for configuring and implementing scripts to generate alerts and reports via SolarWinds monitoring and worked towards moving from Groundworks to SolarWinds for monitoring.
• Hands on with a variety of hardware from different vendors like Dell, Oracle, HP-UX, Sparc Enterprise, SUN Fire, ProLiant, Sun Blades etc.
• Deployed VMs on VMware vSphere client and Vagrant for application intranet servers at different datacenters for Linux, Apache, MySQL & PHP and decommissioned old hardware.
• Responsible for planning, coordinating and implementing the quarterly patching schedule in concurrence with Oracle releasing its patches for all the 300+ Unix/Linux servers (Development, Test & Production) in the infrastructure. All the servers were divided into different batches for dev/test and production.
• The patch work was automated using a patching script and done on the weekends to facilitate downtime with coordination with the application teams.
• Mirrored repositories and deployed the patches to be applied to all the servers through puppet.
• Managing the server netgroups and their profile classes via the puppet console and troubleshooting failed puppet runs.
• Implemented puppet modules to change root passwords periodically across the Unix/Linux landscape for security.
• Maintained scripts on GIT repository and deployed them to Linux and Solaris server netgroups via puppet. Some of these scripts are run periodically to send data to SolarWinds monitor.
• Create LDAP user profiles and grant sudo access and permissions to new/existing users for various netgroups of servers.
• Responsible for on demand patching as well, such as BadLock patch for Samba security and application packages upgrade, as well as Solaris kernel upgrades to remove system errors/fix incompatibility.
• Replaced failed hard drives from production servers with IBM General Parallel File System (GPFS) and other Solaris servers.
• Worked with Oracle support to replace server motherboards and faulty network interface controller (NIC) cards.
• Worked with Database Administrator and Storage Administrator to create Oracle users, provision file system allocation, and configure server hardening.
• Performed the periodic audit for license renewals for the Oracle systems/tapes and Veritas services.
• Disk space and file management tasks were undertaken whenever needed and other routine system administration tasks.

Environment: Red Hat Enterprise Linux 5.11, 6.6, SUSE 10.2, 11.3, Solaris 8, 9 & 10, Veritas SFHA, Veritas Volume Manager/ File System, Veritas Operations Management (VOM), Sun Sparc Enterprise M3000/M4000/M5000/T2000/T4-2, Sun Fire v240/v210/v490/v890, Sun Blade T6300, HP Proliant BL 460c Gen6,8/DL 360p Gen8/DL 380 Gen 9, VMware VCenter VSphere 5.5, SNMP, Ethernet, NFS, NIS, RIP, TCP/IP, FTP, TFTP, and SFTP, Korn shell, Nagios, Perl, Bash, Tomcat and Apache.

Confidential, Norristown, PA

Senior Linux/Unix Administrator

Responsibilities:

• Installed RHEL 5.0/6.0 using Kickstart and custom building the servers per SOW.
• Installation and configuration of Solaris 10 with Zones, Containers and LDoms.
• Installed/configured EMC Storagewith 0, 1 & 5 RAID configurations.
• Installed Veritas Volume Manager 5.0/5.1/6.0, VCS Cluster Server 5.0/5.1/6.0 for failover and for mirroring and raid level configurations on EMC storage frames.
• Performed all System Administration tasks like Cron jobs, installing packages, and patches. Configured and installed Automount and Jumpstarted Solaris servers.
• Configured and maintained Samba Server, NFS Server, NIS Server and clients, DNS clients and AutoFs File systems.
• Provide support for CAC (Common Access Card). Troubleshoot smart card readers, middleware and PKI (Public Key Infrastructure) s.
• Performing tape backups, archiving and checking data integrity through Shell Scripts and job automation.
• Configuration Puppet, Chef for main servers, implementation of configuration files and main services of monitoring (Zabbix), web-servers, security (LogRhythm) etc.
• Installed, configured VMs on VMware 5, vSphere 5.0, configured ESX hosts, added datastores to ESX hosts, created vSwitches, templates and migrated VMs across ESX hosts.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage.
• Ignite/UXinstallation andupdates, createdGoldenImagesof the productionHP-UXservers and rapidlydeployed a new test and QA environment on Virtual Machines with no down time.
• HPService Guardv11.20maintenances on servers, Integrity Virtual Machines runningHP-UX11i.V3.
• Responsible for installing and configuring Nagios on Linux, Solaris clients.
• Testing and upgrading production, development and test Linux and Solaris servers.
• Creation & maintenance of user accounts, passwords and profiles, home directories, initialization of files, groups’ creation and management, setting file permissions, customizing shell environment setup for users.
• Created LVMs on the Linux servers for disk management.
• Installation, setup and configuration of Apache Kafka and Apache Zookeeper.
• Troubleshooting various problems related to VxVM in initializing, replacing, mirroring, encapsulating and removing disk devices on various Production Boxes.
• Maintaining production critical servers running Solaris UNIX, Linux supporting Oracle database and web services while providing 24x7 support.
• Worked with Veritas NetBackup 7.5 on development and production servers for backups and restores.
• Implementation of a new rating plan, including pricing byperiland many new rating data elements and rating attributes.
• Writing Shell Scripts for managing day-to-day transactions & for automation of routine tasks and troubleshootingCassandraissues.

Environment: Red-Hat Linux Enterprise servers (HP Proliant DL 585, BL 465/485, ML Series), HP-UX, AIX Solaris 8, 9, 10, AIX 5.3, 6.1, SAN (NetApp), BladeLogic, Veritas Cluster Server 5.0/6.0, Windows 2003/2012 server, Shell programming, JBoss 4.2, JDK 1.5,1.6, VMware Virtual Client 5.1, VMware Insfrastructure 5.1.

Confidential, Roseland, NJ

AIX System Administrator

Responsibilities:

• Administered multiple IBM power7/6/5 p520s, p550s, p570s, p595s, p760s, p770s runningAIX 5.3/6.1/7.1.
• Co-ordinated application team to UpgradeAIX5.2 toAIX5.3,AIX5.3 to 6.1,AIX6.1 to 7.1
• Design, build, install and configure Red Hat Enterprise Linux servers & workstations.
• Administrating and managing windows servers including configuration and troubleshooting of Active Directory, DNS, DHCP, IIS.
• Configured Microsoft Active Directory domains and managed Active Directory users on Windows Server 2003.
• Worked on Linux x86, Windows 2003 Advance Server, Samba, Squid, Active Directory Create and administer RedHat Enterprise Linux operating systems to implement on the existing network.
• Responsible for the operation, maintenance and integrity of a distributed, networkedAIXbased environment.
• Migrated Linux based machines and Power off Machines to virtual machines using VMware converter boot CD.PowerHA 6.1 and 7.1 or Cluster Node or later - HACMP.
• Creating and buildingAIXLPAR by PowerVM Tool and VIO mapping.
• Used shell scripting (Including Korn, Bash and Perl) for system/application in automating server task, installing and monitoring applications and data feeding file transfer and log files.
• Good knowledge on BMC Blade Logic Console.
• Worked on IBM Frames p740, p750, p770.
• Started working on POWER 8 Frames - see difference between P7 and P8.
• Creating and buildingAIXLPAR Manually via NIM servers.
• Installing security filesets like Centrify, nmda and networker, invista, DS agents, Petrol Agents.
• Performed 6.1, 7.1AIXOS Installation manually and through Blade-logic Console.
• LPM and troubleshooting the encountered erros.
• AIX6.1 patching --TL06 to TL08
• EMC DMX -4, VMAX, VNX 7500, 5700, 5300 System administration.

Environment: Hardware: IBM - p5-520, p5/p6-550, p5/P6-570, p5/p6-595, p7-750, O/S: IBMAIX5.1, 5.2, 5.3, 6.1, 7.1, Linux, VIO 1.3, 1.5, 2.1

Confidential, Kansas City, MO

Unix/Linux Systems Administrator

Responsibilities:

• Configuration & migration of UNIX and Linux operating systems.
• OS cloning using System Imager. Create Golden client and copy the image of golden client at system image server.
• Install new OS using system image of Golden client and installation of packages and patches.
• Work with the application team to start applications and resolve any issues as reported from CRM.
• Troubleshooting of networking issues after migration.
• Writing Shell and Perl scripting for automation of routine tasks.
• Migration and troubleshooting of Veritas Cluster.
• Disk and File system management through Logical Volume Manager including GFS (Global File system).
• Analyze user requirements, propose alternative solution in setting up local area network and maintain existing network up and running.
• Proven ability to automate server builds using Kickstart, jumpstart, management and configuration of system services using Puppet.
• Red Hat Satellite Server for upgrading and patching Linux Servers.
• Troubleshooting hardware, software and configuration problems for various protocols and topologies.
• Analyze, review and alter existing network to increase operational efficiency or adapt to new requirement.
• Support and administer various network infrastructure components to ensure uptime and reliability.
• Routine administrative tasks, like troubleshooting and correcting problems in the existing network.
• Manages process to ensure product release, applications, and corporate block point cycles are synchronized.

Environment: Red Hat Linux (RHEL 4/5), Logical Volume Manager, Veritas Cluster Server, Global File System, Red Hat Cluster Servers, Oracle, MySQL, Sun Solaris 8/9/10, AIX 5.3L, Windows, Sun Fire 3800/4800/6800 , V890, V880, V490, V480 and V210, VCS, Veritas Volume Manager, Veritas Net backup, Ksh/Perl programming, DNS, NIS, NFS, Apache, Tomcat.

Linux / UNIX Administrator

Responsibilities:

• AIX 5.x, Red Hat Linux, RHEL and Solaris 9/10 servers’ administration.
• UNIX Administration- maintaining around 1000 Production environment including IBM AIX & RHEL 4.x and 5.x servers. Managing their memory/CPU load, Disk Space, swap space, processes etc. running on them.
• Installation, configuration and administration of Red Hat Linux 8/ 9/ RHEL 4.x,5.x, AIX 5.1/5.2 and Solaris 8/9 servers.
• Extensive experience on installation, configuration and maintenance of Squid proxy.
• Manage servers using HMC/WebSM and create LPARS and building servers using NIM from mksysb or spot in AIX.
• Configure servers to use HTTP, DNS, NFS, NetBackup, and Storage Disk configuration.
• Creating and administering user accounts, SUDO access, etc.
• Managing file systems and modify them on the fly using LVM on AIX and Linux.
• Diagnose and correct boot failures arising from boot loader, modules, and file system errors on Linux.
• K Shell scripting of error logs, print queue checking, and disc space status via email routing.
• Technical lead, overseeing development of PHP, Perl based website and other directory sites operated by Confidential Corporation.
• Installed and maintained Puppet-based configuration management system.
• Designed and deployed the Nagios implementation, implemented Puppet modules to automate configuration of a broad range of services.
• Responsible for installation, configuration, administration, performance tuning, troubleshooting, and maintenance of RHEL 4.x and 5.x systems, Red Hat Enterprise Linux Satellite Servers.
• Mirror the root volume group in AIX and use it for redundancy.
• Performing O/S upgrades and maintenance level upgrades.
• Use ILO/HMC for remote access of servers on Linux/AIX respectively.
• Troubleshoot hardware, software and operating system related errors on Linux and AIX.
• Installed and configured monitoring tools Big Brother and Nagios for monitoring the network bandwidth and the hard drives status.
• Maintain & troubleshoot SAN and Fiber card related errors on AIX and storage disks from IBM, HITACHI, and EMC Disk arrays.
• Installed MultiplePathing (MPIO) software such as EMC Powerpath, HDLM.
• Configured Bonding in Linux and Ether-channel in AIX.

Environment: IBM AIX 4.3.3, 5.1, 5.2, Solaris 8/9, RHEL 3.X, 4.X, Oracle 8i, 9i,MySQL, Apache 2.x, LPARS, VMware ESX Server, Veritas Volume Manager, NIM, Kickstart, HACMP, HMC, WebSphere, IBM P510, P670, P690, P550, P570, P590, HP DL320, HP DL330, HP DL 380s, EMC Symmetrix, Hitachi, IBM arrays, Linux Satellite Servers, Informix 7.x, 11.x, Nagios.

Confidential

UNIX/LINUX Administrator

Responsibilities:

• Installation and configuration of Red Hat Enterprise Linux (RHEL) 5x, 6x Servers on HP, Dell Hardware and VMware virtual environment.
• Installation, setup and configuration of RHEL, CentOS, OEL and VMware ESX on HP, Dell and IBM hardware.
• Installation and configuration of Sun Enterprise Servers, HP and IBM Blade Servers, HP 9000, RS 6000, IBM P series.
• Expertise in enterprise class storage including SCSI, RAID and Fiber-Channel technologies.
• Configuration and maintenance of virtual server environment using VMWARE ESX 5.1/5.5, vCenter and vSphere.
• Adding SAN using multipath and creating physical volumes, volume groups, logical volumes.
• Storage Provisioning, volume and file system management using LVM, VERITAS Volume Manager and VERITAS File system (VERITAS Storage Foundation), Configuring ZFS file systems.
• Creating user accounts, user administration, local and global groups on Solaris and Red Hat Linux platform.
• Setup, implementation, configuration, and documentation of backup/restore solutions for Disaster/Business recovery of clients using TSM backup on UNIX, SUSE & RedHat Linux platforms.
• Installed and configured Netscape, Apache web servers, Samba Server and WebSphere Application servers on Linux and AIX.
• Installation and configuration MySQL on Linux servers.
• Performed quarterly patching of Linux, AIX, Solaris and HPUX servers on regular schedule.
• Heavily utilize the LAMP stack (Linux, Apache, MySQL, PHP/Perl) to meet customer needs.
• Installation and configuration of Oracle 11g RAC on Red Hat Linux nodes.
• Installed and configured different applications like apache, tomcat, JBoss, xrdp, WebSphere, etc. and worked closely with the respective teams.
• Setup, implementation and configuration of SFTP/FTP servers.
• Setting up JBoss cluster and configuring apache with JBoss on RedHat Linux. Proxy serving with Apache.
• Troubleshooting Apache with JBoss and Mod jk troubleshooting for the clients.
• Installed and maintained Jenkins to deploy Java code developed by developers and build framework.
• Working on Shell and Perl scripts, and system performance monitoring and tuning.
• Setting up the lab environment with Tomcat/Apache, configuring the setup with F5 virtual load balancer for customer application.
• Document all system changes and create Standard Operating Procedure (SOP) for departmental use.
• Resolve all helpdesk tickets and add/update asset records using Remedy Action Request System.
• Provide 24x7 oncall production support on rotation basis.

Environment: RedHat 4x, 5x, Solaris 9/10, AIX, HP-UX, VMware ESX 5.0/5.1/5.5, VSphere, HP ProLiant Servers DL 380/580, Dell Servers (R series), Windows 2008 sever, EMC Clariion, Netapp, SCSI, VMWare converter, Apache Webserver, F5 load balancer, oracle, MySQL, PHP, DNS, DHCP, BASH, NFS, NAS, Spacewalk, WebSphere, WebLogic, Java, Jenkins, JBoss, Tomcat, Kickstart.

Confidential

Linux Administrator

Responsibilities:

• Performed Red Hat Enterprise Linux, Oracle Enterprise Linux (OEL), Solaris, and Windows Server deployment to build new environment by using Kickstart and jumpstart.
• Performed installation, adding and replacement of resources like Disks, CPUs and Memory, NIC Cards, increasing the swapandmaintenanceof Linux/UNIX and Windows Servers.
• Implemented NFS, SAMBA file servers and SQUID caching proxy servers.
• Implemented centralized user authentication using OpenLDAP and Active Directory.
• Worked withVMware ESX ServerConfigured for Red Hat EnterpriseLinux.
• Configured IT hardware- switches, HUBS, desktops and rack servers, and structured the datacenter stacking, racking, and cabling.
• Installed, configured, troubleshoot, and administered VERITAS and Logical volume manager and managing file systems.
• Monitored system performance, tune-up kernel parameter, and added/removed/administered hosts and users.
• Created and administered user accounts using native tools and managing access using sudo.
• Actively participated and supported in the migration of 460+ production servers from old data center to new data center.
• Involved in using RPM and YUM for package management and patching.
• Creating documentation for datacenter hardware setups, standard operational procedures and security policies.
• Create and maintain technical documentation for new installations and systems changes as required.

Environment: RHEL 3/4/5, Solaris 8/9, ESX 3/4, HP DL 180/360/580 G5, IBM p5 series, Fujitsu, M4000, EMC Symmetrix DMX 2000/3000, Linux Satellite Server.